METHOD OF PRODUCING SOLID SODIUM DIFORMATE COMPOSITION Russian patent published in 2011 - IPC C07C51/41 C07C51/43 A23K1/16 A23K1/175 A23K1/18 C07C51/44 C07C53/06 C07C51/42 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a solid sodium diformate composition, having forming acid content of at least 35% of the total weight of the sodium diformate composition, in which aqueous solution (E) is prepared at high temperature, said solution containing sodium formate and formic acid in molar ratio HCOOH:HCOONa higher than 1.5:1, and having molar ratio HCOOH:H₂O of at least 1.1:1, said aqueous solution (E) is crystallised to obtain a solid phase and a mother solution, and the solid phase is separated from the mother solution, where (i) the mother solution is completely or partially fed into a distillation apparatus; (ii) the mother solution in the distillation apparatus is mixed with a sodium-containing base to obtain a mixture (B) which contains sodium formate and formic acid; (iii) the mixture (B) obtained at step (ii) is mixed with formic acid to obtain aqueous solution (E); or the mixture (B) obtained at step (ii) is removed from the distillation apparatus and taken for crystallisation, or, at the crystallisation step, mixed with formic acid to obtain an aqueous solution; and (iv) excess water is primarily removed by tapping from the distillation apparatus; the invention also relates to use of the solid sodium formate composition obtained using the disclosed method as an animal feed additive, particularly feed for non-ruminants, especially pigs and/or birds.

EFFECT: improved properties of the composition.

29 cl, 3 dwg, 1 tbl, 4 ex